No such problem. I do use Saphir cordovan cream and I do have a deer bone on order (although I'm not quite sure how to use it) since my number of cordovan shoes/boots has exceeded 5.
I have a pair of Alden Indy cordovan that I bought to be beater boots and I wear them in the rain and mud. They then shine up just fine with no issues. I've heard about these welts but have not really experienced them.